Trailer Running Lights

[kgower]

We have no running/marker lights on the trailer. Boat 21 195s, trailer is a 22 picked up in May 21. Truck is a 21 GMC Sierra 1500 bought in November. When starting the truck, the display says no connection defaults. A few minutes later the display says check trailer lamps. Brakes, turn signal and flashers work but not the running lights., First occurred two weeks ago on the way to FL. We left at about 5:00am, 25-30 minutes later got the display message, pulled over checked the connections, all good. We drove about an hour and half with no trailer lights, obviously not real safe. Ran the diagnostics on the truck it pointed to the third pin, Any thoughts as to whether it's the truck or the trailer? If trailer, do I have to do to Shoreland'r?

 

[Babin Farms]

Do you have power to the plug when they're on with the trailer unhooked? Check that with a test light first. If not, check the fuse for the trailer lights under the hood. I have this same issue with the running lights on my stock trailer. There's a direct short somewhere on my trailer & it'll pop the fuse immediately.

 

[WV Hillbilly]

First what @Babin Farms said and if that checks out another problem that you may have is this:

Have a 2019 or 2020 Silverado/Sierra With Trailer Lighting Issues? GM Has A Fix! | GM-Trucks.com

If you own a 2019 through 2020 new generation Silverado or Sierra (HD included) that has trouble keeping trailer lights on and/or flashes the lights on your

www.gm-trucks.com

Not as likely as bad trailer wiring but a possibility.

 

[Farny]

We have no running/marker lights on the trailer. Boat 21 195s, trailer is a 22 picked up in May 21. Truck is a 21 GMC Sierra 1500 bought in November. When starting the truck, the display says no connection defaults. A few minutes later the display says check trailer lamps. Brakes, turn signal and flashers work but not the running lights., First occurred two weeks ago on the way to FL. We left at about 5:00am, 25-30 minutes later got the display message, pulled over checked the connections, all good. We drove about an hour and half with no trailer lights, obviously not real safe. Ran the diagnostics on the truck it pointed to the third pin, Any thoughts as to whether it's the truck or the trailer? If trailer, do I have to do to Shoreland'r?

Do you have your vehicle lights turned on? My runners only work when the headlights come on (F150 platinum)

 

[kgower]

Do you have your vehicle lights turned on? My runners only work when the headlights come on (F150 platinum)

Will double check next time we take the boat out (hopefully this Friday). Boat & Trailer about 30 mins from house.

 

[kgower]

Do you have power to the plug when they're on with the trailer unhooked? Check that with a test light first. If not, check the fuse for the trailer lights under the hood. I have this same issue with the running lights on my stock trailer. There's a direct short somewhere on my trailer & it'll pop the fuse immediately.

Will check this first.

 

[Farny]

Will double check next time we take the boat out (hopefully this Friday). Boat & Trailer about 30 mins from house.

More I think about this more I’m thinking you might have a short somewhere.

I have had nothing but problems with this POS Sh!tl@nder trailer. Crappy bow roller, squeaky AF, replaced 2 taillight bulbs already, loose bunks. NOW to top it off yesterday my truck started giving me a turn indicator fault on the right blinker, went back and looked at the trailer and the flasher is working? SMH.

 

[gallobg]

Agree with others, check to see if you have power to that pin on the truck plug. I recently had no left turn signal on my trailer, chased everything down and was stumped. Came to find that on my truck (2021 Ram 1500), each pin on the trailer plug has its own fuse in the main truck fuse box. The left turn fuse was blown for some reason. Replaced and back in business.

 

[AZMark]

Do you have your vehicle lights turned on? My runners only work when the headlights come on (F150 platinum)

Hopefully it’s this. Running lights only work with headlights on my Toyota too but an error is weird.
Are they like Christmas lights where one bulb can burn out & kill all the other running lights too?

 

[HawaiiBreeze]

The DREADED SHORLANDR wiring. The single largest complaint I had and still have about my Yamaha Package.

No need for explanations. This was my wiring inside my galvanized 017 Shorlandr Trailer. Tore it all out and replaced with LED and ran the wires on the outside.

 

[Farny]

The DREADED SHORLANDR wiring. The single largest complaint I had and still have about my Yamaha Package.

No need for explanations. This was my wiring inside my galvanized 017 Shorlandr Trailer. Tore it all out and replaced with LED and ran the wires on the outside.
View attachment 176386View attachment 176387

Sh@tLander strikes again. Which LED kit did you install? Any problems since? We’re only in fresh water so less brutal than the Hawaii salt. But still thinking I may do an electric overhaul.

 

[HawaiiBreeze]

Aloha,

At the time I was in real need real fast so I picked up a set at Walmart. They've been working flawless since 2020. I have not connected any of the Sh@tlandr (funny) side markers or that light bar at the back underneath. Just the two rear lights, zip tied to frame rails. I used those water resistant heat activated soldering connections to connect the wiring to the lights.

-scott

 

[kgower]

Not a fuse issue, pulled all trailer related fuses, all good. Will continue done the rabbit hole.

 

[Babin Farms]

Use a test light to verify that you have power for them at the truck side plug and then proceed to the trailer. If you have power there then it's more than likely a broken wire on the trailer.

 

[Thermobrett]

Not sure if you filled this out, but Shorelandr has a warranty on their trailers.
Might be an avenue to look into if all else fails....

https://www.shorelandr.com/PDF_Docs/SL-Boat-PWC-Trailers-Warranty.pdf

 

[kgower]

Use a test light to verify that you have power for them at the truck side plug and then proceed to the trailer. If you have power there then it's more than likely a broken wire on the trailer.

That'll be the next logical step. Not sure I have a test light, but that's an easy fix.

 

[kgower]

Not sure if you filled this out, but Shorelandr has a warranty on their trailers.
Might be an avenue to look into if all else fails....

https://www.shorelandr.com/PDF_Docs/SL-Boat-PWC-Trailers-Warranty.pdf

Was just talking to my wife about that last night. We only have 30-60 days of warranty period left.

 

[gallobg]

That'll be the next logical step. Not sure I have a test light, but that's an easy fix.

This is the test light that I use, very handy.


CURT 58270 7-Pin RV Blade Trailer Wiring Towing Vehicle Socket Tester, Black https://www.amazon.com/dp/B001EOWQY4/ref=cm_sw_r_cp_api_i_G81DZWMVZF9SNZ13TQJ2?_encoding=UTF8&psc=1